Metallic piston-packing ring



April 8 1924. 1,489,768

M. KROSCHINSKY METALLIC PISTON PACKING RING Filed March 11, 1922 a I r W M 67/7 1272 E? wchinJ/t g w Bateznteel Apr. 8, rare.

i 5 9F BALTMDRE, MARYLAND, ASSIGNOR "TIO FACTURWG @QMPANiL. @F BAETIMQEE, MARYLAND, A GORBOMTIQN 0F MARY- LAND.

METALLIC PISTON-FAGKING RING.

Application filed Bilarch 11, 1922. enial Ito. 542,960.

To all whom it may concern:

Be it known that l, MARTIN Knosonnv- SKY, a citizen of the United States, residin in the city of Baltimore, State oih larylan have invented certain new and useful linprovements in Metallic Piston- Packing Rings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to improvements in metallic piston packing rings, and

it consists in providing a ring composed of two members, that is, an inner and an outer ring so constructed and arranged that the tendency of the composite ring when in use on the piston in the cylinder will tend to alwa s make a tight joint between the interior of the cylinder and the piston.

The invention is also intended to provide a acking ring-which may be easily installed wlthout breakage; a ring which will work equally well when in the inverted position; a ring that does not require joint spacing to secure maximum results, and a ring which braces its own circle by having its breaks or joints spaced at approximately 125 degrees apartin its construction.

1 According to my invention the inner ring is made in the form of an inverted L, in cross section, and the outer ring fits snugly beneath the radial flange of the L and is tied to the outer ring by means of a suitable pin or other engagement at a distance of approximately L25 from the break in the inner ring. Thus the breaks in the inner and outer rings are spaced substantially 125.

apart. By this arrangement the elasticity of the composite ring will be such that all arts of the ring will tend to form a tight JOlIliL as before described.

My invention will be more fully understood after reference to the accompanyin drawings, in which like parts are indicate by similar reference symbols throughout the several views, and in which 2- Figure 1 is a perspective view of the comlete packing ring in the assembled relation,

but before being compressed to fit in the cylinder.

Figure 2 is a similar view, but shows the two rings both compressed until the split ends of each ring abut.

Figure 3 is a plan view of the two rings as shown in Fig. 1, parts of the outer ring being broken away to show the positioning pin.

Figure 4 is a plan view showing the two rings separated, and parts being broken away.

Figure 5 is a perspective view showing the inner ring detached.

Figure 6 is a perspective view of the outer ring.

Figure "7 shows a section along the line 77 of Fig. 3, and looking in the direction of the arrows, the parts being shown on a larger scale than in Fig. 3; and

Figure 8 is a similar view to Fig. 7, but shows a modification in which the positioning pin is parallel to the axis of the ring, and not radial to said axis, as shown in Figs. 3 and 7.

A represents the inner ring which is substantially in cross section in the formbf an inverted L, with the flange a uppermost, find the web a mounted in the grooves, not shown, on the piston. Between the two ends of the ring A is the usual opening a.

B represents the outer ring which is substantially rectangular in cross section, and has its two ends shaped to form overlapping tongues l) and 5 beyond the shoulders b and 6 The tongue 6, is of greater length than the tongue 5, so as to provide, at the split of the ring B, a permanent gap at one side of the meeting ends of the ring B, when the ends of the latter are in abutting engagement. lhis outer ring B is preferably peened on its inner face opposite the break, as indicated at b", to give it tension.

in order to prevent one ring from creeping around relative to the other when in use tendency made cumferentiol ploy of one ring relative to the other is ermitted, and the breaks in the inner on outer rings, when in use as a metallic packing, will always he held by the pin C suhstentielly the predetermined angular distance apart.

. l have found that by permanently merintoining the angular distance of about 125 between the breaths in the two very substantial advantages are secure; thus an irre ulsr expensive tendency of the com plete rmg is prevented and the expansive substantially uniform throughout, and a tight joint all around is efiected both hetween the outer ring and the cylinder null end between the two rings Where radially.

It Will he noted that the two rings A and may he quickly and conveniently assemhled to form it composite ring, and will re rosin locked together against relative cir cumfereutiel movement, While still extensihlei It will also he noted that the outer ring B is protected from carbon by the overlapping edge a of the inner ring; while the Wear is mainly taken, on the thicker outer ring B, thus materially increasing I the life of the device.

Moreover by the herein described arrengement the mount of metal in each of the rings A o 'd B, is sucient, with the construction shown, to prevent accidental o3 circumferences press together insures I i cations might be made in the herein described construction, and in the combination and arrangement of parts which could be used without departing from the spirit of myv invention; and I do not mean to limit the invention to such details except as particularly pointed out in the claim.

Having thus described my invention what I claim and desire to secure by Letters Patent of the United States is I A compound metallic packing comprising an inner and outer separate compressible splitring, the splits in said rings spaced relatively to each other at an angular distence of substantiailly 125 degrees a art circumferentially in one direction, an a radially disposed pin carried by and projecting from the inner ring and extended into the gap of the outer rmg to arrest circumferential movement of one ring relatively to the other and further for permanently maintaining'the splits of the rings spaced apart at distance of substantially 125 degrees.

MARTIN KROSCHINSKY. 

